Answer
In Part (a), pooled variance lies in between, because values are equal.
In Parts (b) - (d), value of pooled variance is weighted towards larger sample.
Work Step by Step
As above
Statistics (12th Edition)
by McClave, James T.; Sincich, Terry T.
Published by
Pearson
ISBN 10:
0321755936
ISBN 13:
978-0-32175-593-3
Chapter 9 - Inferences Based on Two Samples - Exercises 9.1 - 9.29 - Learning the Mechanics - Page 423: 9.8e
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